<!-- 用户列表 -->
<template>
  <div class="">
    <el-breadcrumb separator-class="el-icon-arrow-right">
      <el-breadcrumb-item :to="{ path: '/home' }">首页</el-breadcrumb-item>
      <el-breadcrumb-item>用户管理</el-breadcrumb-item>
      <el-breadcrumb-item>用户列表</el-breadcrumb-item>
    </el-breadcrumb>
    <!-- 卡片视图区域 -->
    <el-card>
      <!-- 搜索与添加 -->
      <el-row :gutter="20">
        <el-col :span="9">
          <el-input placeholder="请输入内容" v-model="queryInfo.query" clearable @clear="getUserList">
            <el-button slot="append" icon="el-icon-search" @click="getUserList"></el-button>
          </el-input>
        </el-col>
        <el-col :span="4">
          <el-button type="primary" @click="addUser">添加用户</el-button>
        </el-col>
      </el-row>
      <!-- 用户列表内容区域 -->
      <!-- stripe: 斑马条纹 border：边框-->
      <el-table :data="userlist" stripe border >
        <el-table-column label="#" type="index"></el-table-column>
        <el-table-column label="姓名" prop="username"></el-table-column>
        <el-table-column label="邮箱" prop="email"></el-table-column>
        <el-table-column label="电话" prop="mobile"></el-table-column>
        <el-table-column label="角色" prop="role_name"></el-table-column>
        <el-table-column label="状态">
          <template slot-scope="scope">
            <el-switch v-model="scope.row.mg_state" @change="userStateChanged(scope.row)">
            </el-switch>
          </template>
        </el-table-column>
        <el-table-column label="操作" width="180px">
          <template slot-scope="scope">
            <el-button type="primary" icon="el-icon-edit" size="mini" @click="showEditDialog(scope.row.id)"></el-button>
            <el-button type="danger" icon="el-icon-delete" size="mini" @click="removeUserById(scope.row.id)"></el-button>
            <el-tooltip effect="dark" content="分配角色" placement="top" :enterable="false">
              <el-button type="warning" icon="el-icon-setting" size="mini" @click="setRole(scope.row)"></el-button>
            </el-tooltip>
          </template>
        </el-table-column>
      </el-table>
      <!-- 分页 current-page当前页数page-size每页显示多少条-->
      <el-pagination
        @size-change="handleSizeChange"
        @current-change="handleCurrentChange"
        :current-page="queryInfo.pagenum"
        :page-sizes="[1, 2, 3, 5]"
        :page-size="queryInfo.pagesize"
        layout="total, sizes, prev, pager, next, jumper"
        :total="total">
      </el-pagination>
     </el-card>
      <!-- 添加用户对话框 -->
      <el-dialog title="添加用户" width="50%"
        :visible.sync="addDialogVisible" @close="addDialogClosed">
        <!-- 内容主题区 -->
        <el-form :model="addForm" :rules="addFormRules" ref="addFormRef" label-width="70px">
          <el-form-item label="用户名" prop="username">
            <el-input v-model="addForm.username"></el-input>
          </el-form-item>
          <el-form-item label="密码" prop="password">
            <el-input v-model="addForm.password"></el-input>
          </el-form-item>
          <el-form-item label="邮箱" prop="email">
            <el-input v-model="addForm.email"></el-input>
          </el-form-item>
          <el-form-item label="手机" prop="mobile">
            <el-input v-model="addForm.mobile"></el-input>
          </el-form-item>
        </el-form>
        <!-- 底部区域 -->
        <span slot="footer" class="dialog-footer">
          <el-button @click="addDialogVisible = false">取 消</el-button>
          <el-button type="primary" @click="saveok">确 定</el-button>
        </span>
      </el-dialog>
      <!-- 修改用户的对话框 -->
      <el-dialog title="修改用户"  width="50%"
        :visible.sync="editDialogVisible"
        @close="editDialogClosed">
        <!-- 内容主体 -->
        <el-form
          :model="editUserForm"
           ref="editUserFormRef"
          :rules="editUserFormRules"
           label-width="70px"
        >
          <el-form-item label="用户名">
            <el-input v-model="editUserForm.username" disabled></el-input>
          </el-form-item>
          <el-form-item label="邮箱" prop="email">
            <el-input v-model="editUserForm.email"></el-input>
          </el-form-item>
          <el-form-item label="手机" prop="mobile">
            <el-input v-model="editUserForm.mobile"></el-input>
          </el-form-item>
        </el-form>
        <span slot="footer" class="dialog-footer">
          <el-button @click="editDialogVisible = false">取 消</el-button>
          <el-button type="primary" @click="editUser">确 定</el-button>
        </span>
      </el-dialog>
     <!-- 分配角色的对话框 -->
    <el-dialog title="分配角色" :visible.sync="setRoleDialogVisible" width="50%" @close="setRoleDialogClosed">
      <div>
        <p>当前的用户：{{userInfo.username}}</p>
        <p>当前的角色：{{userInfo.role_name}}</p>
        <p>分配新角色：
          <el-select v-model="selectedRoleId" placeholder="请选择">
            <el-option v-for="item in rolesList" :key="item.id" :label="item.roleName" :value="item.id">
            </el-option>
          </el-select>
        </p>
      </div>
      <span slot="footer" class="dialog-footer">
        <el-button @click="setRoleDialogVisible = false">取 消</el-button>
        <el-button type="primary" @click="saveRoleInfo">确 定</el-button>
      </span>
    </el-dialog>
  </div>
</template>

<script>
export default {
  data() {
    // 自定义验证邮箱的规则
    var checkEmail = (rule,value,cb) => {
      // 验证邮箱的正则表达式
      const regEmail = /^\w+@\w+(\.\w+)+$/
      if(regEmail.test(value)){
        return cb()
      }
      cb(new Error('请输入合法邮箱'))
    }
    // 自定义手机号规则
    var checkMobile = (rule, value, cb) => {
      const regMobile = /^1[34578]\d{9}$/
      if (regMobile.test(value)) {
        return cb()
      }
      // 返回一个错误提示
      cb(new Error('请输入合法的手机号码'))
    }
    return {
      // 获取用户列表的参数对象
      queryInfo:{
        query:'',
        pagenum:1,  //当前页数
        pagesize:2
      },
      userlist:[],
      total:0,
      addDialogVisible:false, //添加用户
      editDialogVisible:false, // 修改对话框
      //添加用户表单数据
      addForm:{
        username:'',
        password:'',
        email:'',
        mobile:'',
      },
      //根据id查询用户信息修改
      editUserForm:{},
      // 控制分配角色对话框的显示与隐藏
      setRoleDialogVisible: false,
      userInfo:{},// 需要被分配角色的用户信息
      // 所有角色的数据列表
      rolesList: [],
      // 已选中的角色Id值
      selectedRoleId: '',
      // 编辑用户表单验证
      editUserFormRules: {
        email: [
          { required: true, message: '请输入邮箱', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' }
        ],
        mobile: [
          { required: true, message: '请输入手机号码', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }
        ]
      },
      //添加表单验证规则对象
      addFormRules:{
        username:[ 
          { required: true, message: '请输入', trigger: 'blur' },
          { min: 3, max: 10, message: '长度在 3 到 10 个字符', trigger: 'blur' }],
        password:[ 
          { required: true, message: '请输入', trigger: 'blur' },
          { min: 6, max: 15, message: '长度在 6 到 15 个字符', trigger: 'blur' }],
        email:[ 
          { required: true, message: '请输入', trigger: 'blur' },
          { validator: checkEmail, trigger: 'blur' }],
        mobile:[ 
          { required: true, message: '请输入', trigger: 'blur' },
          { validator: checkMobile, trigger: 'blur' }],
      }
    }
  },
  //创建完成
  created() {
    this.getUserList()
  },
  //方法集合
  methods: {
    //获取用户列表
   async getUserList(){
      const {data:res} =await this.$http.get('users',{
        params:this.queryInfo
      })
      if(res.meta.status !== 200) {
        return this.$message.error('获取用户列表失败')
      }
      this.userlist = res.data.users 
      this.total = res.data.total
    },
    // 监听pagesize事件
    handleSizeChange(newSize){
      this.queryInfo.pagesize = newSize
      this.getUserList()
    },
    // 监听页码值改变事件
    handleCurrentChange(newPage){
      this.queryInfo.pagenum = newPage
      this.getUserList()
    },
    //监听用户状态改变
    // users/:uId/state/:type
    async userStateChanged(userInfo){
      // userinfo.mg_state
     const {data:res} = await this.$http.put(`users/${userInfo.id}/state/${userInfo.mg_state}`)
      if(res.meta.status !== 200){
        //put接口失败需要同步重置页面状态
        userInfo.mg_state = !userInfo.mg_state
        return this.$message.error("更新状态失败")
      }
      this.$message.success("更新状态成功")
    },
    // 添加用户
    addUser(){
      this.addDialogVisible = true
    },
    //确定按钮
    saveok(){
      // 提交请求前，表单预验证
      this.$refs.addFormRef.validate(async valid => {
        console.log('valid=',valid);
        if(!valid) return // 表单预校验失败
        // 可以发起添加用户接口请求
        const {data:res} = await this.$http.post('users',this.addForm)
        if (res.meta.status !== 201) {
          this.$message.error('添加用户失败！')
        }
        this.$message.success('添加用户成功！')
        // 隐藏添加用户对话框
        this.addDialogVisible = false
        this.getUserList()
      })
    },
    // 修改对话框
    async showEditDialog(id){
      console.log('id',id);
      const { data: res } = await this.$http.get('users/' + id)
      if (res.meta.status !== 200) {
        return this.$message.error('查询用户信息失败！')
      }
      this.editUserForm = res.data
      this.editDialogVisible = true
    },
    //关闭修改对话框
    editDialogClosed(){
      this.$refs.editUserFormRef.resetFields()
    },
    // 监听关闭对话框
    addDialogClosed(){
      this.$refs.addFormRef.resetFields()
    },
    editUser(){
      // 提交请求前，表单预验证
      this.$refs.editUserFormRef.validate(async valid => {
        console.log('valid=',valid);
        if(!valid) return this.$message.error('修改信息校验失败！')
        // 发起修改的请求
        const { data: res } = await this.$http.put('users/' + this.editUserForm.id,{email:this.editUserForm.email,mobile:this.editUserForm.mobile})
          if (res.meta.status !== 200) {
            this.$message.error('更新用户信息失败！')
          }
          // 隐藏添加用户对话框
          this.editDialogVisible = false
          this.$message.success('更新用户信息成功！')
          this.getUserList()
      })
    },
    //删除 byId
    async removeUserById(id){
        const confirmResult =await this.$confirm('此操作将永久删除该用户, 是否继续?', '提示', {
          confirmButtonText: '确定',
          cancelButtonText: '取消',
          type: 'warning'
        }).catch(err => err) //捕获错误要不然取消报错
        // 点击确定 返回值为：confirm
        // 点击取消 返回值为： cancel
        if (confirmResult !== 'confirm') {
          return this.$message.info('已取消删除')
        }
        const { data: res } = await this.$http.delete('users/' + id)
        if (res.meta.status !== 200) return this.$message.error('删除用户失败！')
        this.$message.success('删除用户成功！')
        this.getUserList()
    },
    // 监听分配角色对话框的关闭事件
    setRoleDialogClosed() {
      this.selectedRoleId = ''
      this.userInfo = {}
    },
     // 展示分配角色的对话框
    async setRole(userInfo) {
      this.userInfo = userInfo
      // 在展示对话框之前，获取所有角色的列表
      const { data: res } = await this.$http.get('roles')
      if (res.meta.status !== 200) {
        return this.$message.error('获取角色列表失败！')
      }
      this.rolesList = res.data
      this.setRoleDialogVisible = true
    },
    // 点击按钮，分配角色
    async saveRoleInfo() {
      if (!this.selectedRoleId) {
        return this.$message.error('请选择要分配的角色！')
      }

      const { data: res } = await this.$http.put(
        `users/${this.userInfo.id}/role`,
        {
          rid: this.selectedRoleId
        }
      )

      if (res.meta.status !== 200) {
        return this.$message.error('更新角色失败！')
      }

      this.$message.success('更新角色成功！')
      this.getUserList()
      this.setRoleDialogVisible = false
    },
  }
}
</script>
<style lang='less' scoped>

</style>